Cameroon Baccalauréat Série F1 Practice Questions - Cameroon Baccalauréat Technique Série F1 (Fabrication Mécanique) Exam

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In mechanical manufacturing analysis, what is the primary purpose of the 3-2-1 locating principle (isostatisme) when positioning a prismatic workpiece in a milling fixture?

To eliminate all 6 degrees of freedom (3 translations and 3 rotations) using 6 contact points without hyperstatic constraint To clamp the workpiece with maximum hydraulic pressure along three orthogonal axes To ensure that cutting fluids can flow freely around all six exterior faces To allow the workpiece to self-center dynamically during high-speed face milling

Correct Answer:

To eliminate all 6 degrees of freedom (3 translations and 3 rotations) using 6 contact points without hyperstatic constraint

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